Possible Clues:

• Banish indigestion -- take a dose of this and hop
• Lively party, knees-up
• Dishing out in local reception
• Large lively party
• Noisy disturbance
• A big, swinging party
• Large, lively party
• Party female (beastly type) hugged by soldiers turning up
• Knees-up after part of leg is found on excavating expedition
• Language used within confines of stag party